Linotype-machine.



PATENTED JUNE 9, 1908.

T. S. HUMANS. LINOTYPE MACHINE.

APPLICATION FILED HARM, 1908.

UNITED STATES PATENT OFFICE.

THOMAS SIMMONS HOMANS, OF BROOKLYN,

NEW YORK, ASSIGNOR TO MERGENTHALER LINOTYPE COMPANY, A CORPORATION OF NEW YORK.

LINOTYPEPMACHINE.

Specification of Letters Patent.

Patented. June 9, 1908.

that the slugs shall be trimmed very accurately to a predetermined thickness, and that their opposite faces shall be exactlyparallele To this end, it is common to employ two stationary knives, one of which is adjustable to' ward and from the other, in order to vary the distance between them according to the thickness of the slugs required.

Owing to the various conditions which are encountered in ractice, it has been found extremely difiicu t to eflect the accurate adjustment of the knives and hold them in operativeposition with the requirdrigidity-f In lace of the ordinary means, I make use" of a s iding guided support to which the movable knife is firmly secured, and I combine with this sliding support a screw provided with right and left threads, one of which. is seated in the knife-supporting late, and the other in a stationary nut, 'so t at when the screw is turned, the sliding knife support is caused to move in relation to the screw, and

the screw also. caused to move bodily in an endwise direction. I combine with this screw an operating handle and means for locking the same indefinite positions, and I provide springs tending to prevent lost motion of the parts, and to aid in the adjustmentof themovable knife on its support.

In the drawings,-Figure 1 is a horizontal section through my improved trimming mechanism on the line 11 of Figs. 2, 3 and 4. Fig. 2 is anendelevation of the same, looking in the direction of the arrow 2 in Fig.

I. Fig. 3 is a face view in the direction of" the arrow 3 inFig. 1,. Fig. 4 is across-section on the line 4-4 of Figs. 1 and 3. Fig. 5 is a peripective view of the knife-supporting slide. ig. 6 is a cross section on line 66,

Q The forward and backward Fi 3, showing the mannerin which the movab e knife is adjustably secured to its carry- .in slide.

eferring to the drawings A, A represent a rigid frame or block intended to be bolted to the main-frame of the machine and support the various operating parts of the-trimming mechanism. It may be made of any suitable form, but is preferably constructed as shown, of two having between t em a throat or passage a through which the slu s are ejected.

B is a stationary ife secured to the frame by bolts 5.

C is a movable knife slotted to receive screws is, by which it is secured firmly to the supporting slide D, which is screwed firmly to and in efiect forms a part of a cylindrical guiding member E arranged to slide horizontally in an o ening in the frame A.

The mem er E, which may be made of other than a-circular form in cross-section, is snugly'fitted in its seat so that it may slide endwise, and is relied u on as the prlncipal means for guiding the p ate D and the knife thereon. This guide is preferably provided in one side with a longitudinal groove to receive a corresponding rib on the plate, as clearly shown in Figs. 1 and 4, this connec tion preventing any possibility of changein the relation between the guidg and the plate. It will be observed that the aziis of this. guide E is at right angles to the cutting edge of the knife, so that it serves to keep the knife 0 in exact parallelism with the opposing knife B.

The face of the sup orting plate D is flat-' tened and seated snug against the frame A to assist in guiding an giving rigidity to the arts.

movement of the late Dto change the distance between the ives, .is effected by the screw F, having at opposite ends the reversely inclined threads The thread f is seated in a projection on the plate D, while the thread f is seated in a nut or enlargement a formed on the fixed frame, so that when the screw is turned in either direction, it is shifted axially and bodily through the nut a, while at the same time it causes the plate D to move forward or backwardupon the screw.

, The screw is operatedand controlled to adplarts united by bolts 0. and

position, and then permitted to engage anholding the lever and the knife securely inposition. When adjustment of the knife is required, the lever is pressed laterally in order to disengage the plate g, after which the lever is turned till the knife is in the required other stud. Any other suitable means may be employed for locking the lever in the various positions.

In practice, the sector plate is graduated and the screws so proportioned that the movement of the lever from one stud to the next will'change the distance between the knives one point, point being the printersunit of measure.

In order to prevent accidental disengagement, of the lever, I pro ose to provide any suitable locking device, i r example, a screw g seated transversely in the lever and adapted to be screwed sector plate.

In order to permit the very slight variations in the thickness of the slugs, I propose to provide the lever with a scale or Vernier to be read in connection with marks on the studs or on the sector plate. The preferred form of this device is shown in Figs. 1 and 2 in which I represents a fin er pivoted in a slot in the hand-lever, anc provided with graduations at one end. It stands normall within the lever and in an inoperative position, as shown in Fig. 2, but may be turned outwardat will, as shown in dotted lines, in order that its graduations may be read in connection with the studs or the plate.

In order to prevent play or lost motion between the thread and the'other parts, I recommend the employment of one or more springs H seated at one end in the frame and bearing at the opposite endagainst the rear face of the movable knife 0. Thesesprings insure the exact adjustment of the knife when the screw is turned in either'direction. They also serve to urge theknife C forward in relation to its' supporting plate D in o position to the influence of the screws J, w 10h are passed through a flange on the plate D into the back of the knife 0 for the purpose of adjusting the knife forward and backward on the supporting plate D. These screws, located at o posite ends of the knife, have the effect, w on turned in the proper direction, of drawing the knife backward in relation to'the plate D and away from the opposagainst the outer face of the posed to insert one edge of this plate ingrooves in the knife 0, as usual, and to attach the spring M to the end of the guiding member E.

The plate D and its guide E are made in separate parts in order to facilitate their manufacture, but it is obvious that the uide may be made integral with the plate 1f desired, and of any suitable form in cross-sec tion.- T

In operating my device, it is only necessary to move the lever to one side in order to unlock it from the sector late, and then swing it'in one direction or t e other until it is opposite that stud which corresponds to the thickness of the required slug, whereupon the lever is ermitted torengage the plate.

Having thus described my invention, I claim and desire to secure by Letters Patent,-

1. In combination with a supportingframe, a knife-bearing plate guided therein, a right and left-hand screw connecting said parts, and means for turning the screw to andsecuring it in definite positions.

2. In combination with aframe A, A, the.-

plate D provided with the guide .13, the knife 0 secured to said plate, the right and lefthand screw connecting the frame and plate,-

the lever attached to the screw and means.

for locking the lever in predetermined posi-..

tio'ns.

3. In combination with a with a sector plate and the knife-bearin plate guided therein, the right and left-hen screw, the spring lever attached to the screw and adapte to interlock with the sector. A 4. In combination with a frame, a sliding support for the knife mounted thereon, a

ing said member, the'spring-arm or'lever at frame provided and a graduated plate tached to the screw and provided with a toothed plate, and a sector plate having studs or teeth to interlock with the plate on the lever.

6. In combination, the frame, the platejDg guided thereon, the'knife'C m un d 4 6.

gate, means for adjusting the late, a spring, iny hand this thirteenth day of March, 1908, acting against the back 0 the knife, and in the presence of two attesting witnesses.

screws, J connectingthe gilate and knife and acting in opposition to the spring; .Whereb 5 adjustment of the knife upon the plate 1s facilitated.

In testimony whereof have hereunto set THOMAS SIMMONS HOMANS.

Witnesses:

EDWARD A. SYTz, L. B. MOREHOUsE. 

